Toupper
小写字母转换成大小字母
🗣️ 情景例句
I've seen a lot of people wearing runners lately. I guess they're back in fashion.
最近我看到很多人穿上了披肩，我看是不是披肩又流行起来了？
I plan to be here for over a year.
我计划在这里住一年以上。
If Tom cannot keep his promise, he'll lose face.
如果汤姆不能信守诺言，他就会丢面子。